162 
Cotton imported at Liverpool from 1st Jan. to Aug. 21st. 
From New Orleans 
Different American States 
Brazils 
Demerara 
Barbadoes 
Jamaica 
West India Islands 
4773 | 99767 Bags. 
94994 j 
68460 
14210 
5053 
7379 
20536— Total, 215,405 Bags. 
Cotton imported into London, Liverpool, and Glasgow, 
during the year 1807. 
British West Indies 
Colonies conquered from the Dutch... 
Portugal 
East Indies 
United States of America 
All other ports 
28969 Bags. 
43651 
18981 
11409 
171267 
8390 
(See Month Review 
for August, 1812.) 
282,667 Bags. 
Add Bristol and Lancaster. 
“ Arsenic in Pyrites and Various Products,” by H. A. 
Smith, communicated by Professor Roscoe, F.R.S. 
The difference existing between the amount of Arsenic in 
Pyrites in published analyses and that found in practical 
working led the author to make the following series of ex- 
periments, the results of which are arranged in three tables. 
Table I. Part I. Gives the analysis of various specimens 
of Pyrites ; these are extracted from Richardson and Watt’s 
Technology in Part II. The author’s analyses are given of 
a few specimens of the same species of ore. 
Table II. Gives the amount of arsenic in a certain kind 
of Pyrites; in the sulphuric acid manufactured from it; and 
in the various products in the manufacture of which the 
sulphuric acid had been used ; also the amount of arsenic in 
the chamber and flue deposits. 
Table III. Is calculated from Table 11. , giving the amount 
in a manner more useful for practical purposes. 
